1000-year records of southern hemisphere background concentrations of CO2 parts per million (ppm – orange), N2O parts per billion (ppb – blue) and CH4 (ppb – green) measured at Cape Grim Tasmania and in air extracted from Antarctic ice and near surface levels of ice known as firn. Global CO2, methane (CH4), and nitrous oxide […]
Contact: Michael Bishop, michael.bishop@iop.org, 01-179-301-032, Institute of Physics12 April 2012 Meat consumption in the developed world needs to be cut by 50 per cent per person by 2050 if we are to meet the most aggressive strategy, set out by the Intergovernmental Panel on Climate Change (IPCC), to reduce one of the most important greenhouse […]
By Tom Laskawy10 April 2012 When I examined the reasons agriculture often gets a pass in climate negotiations recently, I pointed to the fact that precise measurement of the climate impact of many industrial farming practices remains difficult and controversial. This is especially true when it comes to synthetic nitrogen fertilizer. The effect of excess […]
By Darren Osborne, ABC16 March 2012 The increasing amount of nitrous oxide in the atmosphere over the last 65 years is due to nitrogen-based fertilisers, according to a new study. An international team of scientists, led by University of California-Berkeley researcher Dr Sunyoung Park, made the finding after studying air collected at the Cape Grim […]
By JUSTIN GILLIS4 June 2011 On a warming planet, humanity faces a great challenge in feeding itself at reasonable cost in the coming century, as I explain in Sunday’s paper. An issue I raise only in passing in the article is that agriculture itself is one of the earth’s greatest environmental threats. To put a […]
By Staff WritersWashington DC (SPX) Oct 11, 2010 Humans are overloading ecosystems with nitrogen through the burning of fossil fuels and an increase in nitrogen-producing industrial and agricultural activities, according to a new study. While nitrogen is an element that is essential to life, it is an environmental scourge at high levels. According to the […]
ScienceDaily (July 1, 2010) — The emission of the greenhouse gases methane and nitrous oxide has been structurally underestimated, as a result of the measuring methods used. This is the conclusion of the scientist Petra Kroon, who carried out research for the Energy research Centre of the Netherlands (ECN) and Delft University of Technology […]
By Scott C. Doney Abstract: Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record. Major observed trends include a shift […]
Global atmospheric concentrations of carbon dioxide, methane, nitrous oxide, and certain manufactured greenhouse gases have all risen substantially in recent years. • Before the industrial era began around 1780, carbon dioxide concentrations measured approximately 270–290 ppm. Concentrations have risen steadily since then, reaching 387 ppm in 2009—a 38 percent increase. Almost all of this increase […]
NEW YORK, NY, May 26, 2010 — Nitrous oxide, or N2O, is a greenhouse gas considered by experts to be 300 times more powerful in its atmospheric warming effect than carbon dioxide. By far the greatest recorded sources of N2O emissions are from agricultural activities and fossil fuel combustion. But sewage breakdown by some wastewater […]
